Brake for self-playing musical instruments.



, EATENTED MAR. 19, 1907., J. HATTBMER. BRAKE FOR SELF PLAYING MUSICALINSTRUMENTS.

APPLICATION FILED NOV.6,1906

511mm for To (all whom it may concern/r UNITED S- ilA'llEi JUSTUSHATTEi/IER, OF WVIESTYIINEYMY PAT our OFFICE.

"ionic, NEW JERSEY, ASSIGNOR To" HARDMAN,-PEOK & COMPANY, OF NEW YORK, NY., A CORPORATION OF NEW YORK.

BRAKE FQR SELF-PLAYING MUSICAL INSTRUMENTS.

Specification of Letters Patent.

Patented March is, 1907.

Application filed November 6, 1906. Serial No. 342.277.

Be it known that I, J USTUS HATTEMER, a

citizen of the United States, residin r at West New-York, in the countyof Ho son and State of New Jersey, have invented certain new and usefulImprovements in Brakes for Self-Playing Musical Instruments; and I dohereby declare the following tobe full, clear,

and exact description of the invention, such as will enable othersskilled in the art to which it 'appertains to make and use the same. j

This invention relates to selflaying musical instruments, and especiallT to key- 15* board playing instruments operating with a perforatedmusic-sheet.

Anobjeet of the invention is to provide in .a seIf-Iplayingmusicalinstrument a take up spool avin an im )roved brake mechanism associated't erewith to prevent the take-up spool from racing during the rewind.

A further object of the invention is to provide in a device of the classa brake-disk applied to the shaft of a take-up spool and with a s yiedingly upon the brake-disk with means operated from the rewind mechanismfor re leasing, the tension of the brake during the winding.

With these and other objects in view the invention comprises certainother novel constructions, combinations, and -arran ements of parts, aswill be hereinafter more Fully de-' scribed and claimed.

In the drau-ings, Figure l is a View of the improved brake mechanismshown in side elevation and associated with a fragment of a conventionaltake-u spool. Fig. 2 is a view of the brake mec anism shown in endelevation.

Like characters of reference designate corresponding parts throughoutthe several views.

Theimproved brake mechanism forming the subject-n1atter of thisapplication is adapted for association with a keyboard seltplayin'ginstrument or attachment for playing keyboard instruments wherein atake-up spool 10 is provided with a trunnion 11, j'ournaled in acheek-plate 12. The trunnion 11 throughthe c eek-plate and is providedwit an axially-extending shaft 13. To the side ring-pressed brake-shoearranged to bear referablyy' extends outwardlyi of the cheek plate isrigidly secured abracket 14, bent outwardly and then upwardly toaccommodate and journal the extremity of the shaft 13,. U on the bracket14 is rigidly secured another racket 15, provided with a pointedscrewlfi, engagingfthe end of'the shaft 13, andwith a knurled head 17for adjusting the screw 16 and a knurle'd jam-nut' 18 for securing thescrew at-an adjusted position, Between the u wardl extending-end of thebracket 14am the c eeklate 12 is defined a space within which. arake-disk 1 9 is rigidly secured to the shaft 13 in any approved manner,as by means of a set screw 20 inserted through-the hub 21 and engagingthe shaft 13 in the usual well-known manner.

" At any convenient place a block 22 is upper end with a brake-shoe 24.v The brakeshoe 24 is rovided with a concavity 2!) ol less radius t anthe arc of the disk 19. so t lm t the brake-shoe 24 bears u' on the disk19 only at the extremities o the (0Il('-fl\'ll The spring 23 is securedto the block 22 in any approved manner, as by a screw 26, and

a second screw, as 27, is provided bearing against the spring 23 andabove arecess 28, formed in the block 22, by means of which the tensionof the spring 23 is adjusted.

' For releasing the brake-shoe 24 from contact with the disk ltlduringthe operation or winding the music-shoot a shaft 2-9 is journalod, as inthe blocks and\31, and at itupper end is provided with a substantiallyright-angularly-disposcd oil set portion 32, engaging the inner side ofthe brake-shoe 25 and preferably within a notch 33, formed therein. Atits lower end theshalt 29 is providcd with a similarriglitmugularly-disposed oil'set 34, disposed in uphmc at right anglesto the plane of the client 31., and its extremity connected with therewind apparatus, as at 35, whereby the shaft 3U is turned upon its axisto iorce the-shoe 24 outwardly while the instrument is playing and whilethe musicsheet is being wound upon the take-up spool, 10, so that nofriction is prodmml by the shoe then to prevent the spool 10 fromracing.

It will be readily understood that Wllllt lhc IOO , brake-shoe 24 out ofcontact with the 'npheryo'fthe disk 19., so that the take-up'other-endlfor winding the music-sheet. As

soon as the music-sheethas been entirely rewound the" rewind ,mechanismis thrown into operation in the usual well-knownmanner, and by meansofithe connection'3'5 the -'cheek-plate, a take- E trunnion extending ta bracket secured to disk 19 by shaft '29 is released and the brake-shoe24 thrown into yielding engagement with the means of the spring 23. WhatI'claimis g. 'In a'mechanism of the class described, a spool proyidedwith a roughlthe'cheek-platb, the"cheek-plate and forming abearing. forthe trunnion, an auxiliary bracket secured to the bracket, and a'pointed screw extending through the au-xil 1ary bracket, and engagingthe axial extrein ,ityofthe trunnion.

cheek plate, a take up spool having a trunnion' extending-throughthe-cheek-plate, a bracket secured .to' the cheek-plate and form- .ingabear'mg for the trunnion, an auxiliary bracket secured to, the bracket,a-pointed. and engaging the axial extremity of the trun nion,afnctron-disk dislpose'd upon the trun nion, and a brake friction-diskthe cheek-plate, 'a friction-shoe v g theifr'ictionrdisk, a shaftextending r2. a mechanisr'n'ofthe class-described, a

racket dingly engaging the 3. In a mechanism of the class described, acheek-plate, a take-u spool provided with a trunnion extending t roughthe cheek-plate, a bracket rigidly secured to the cheek-plate andembodyin a bearing for the trunnion, an auxiliary brac et secured to thebracket, a pointed screw inserted through the auxiliary bracket, andengaging the axial extremity of the trunnion, a friction-disk carried bythe trunnion between th e bracket and yieldingl y engaging thefriction-disk, and means to disengage the friction-shoffrom the disk.

4. In a mechanism of the class described, a

' cheekeplate, a'take-ii spool provided with a I trunnion'extending t abracket securedupon'the cheek-plate, PTO", "tiding a journal' bearingfor the trunnion, a friction-disk candedqrigid'ly upon the trun- ,nionwithin thebracket, a block secured to rough the cheek-plate,

the cheek-plate, a v spring secured to the block,--a brake-shoe carriedby the spring in yieldingengagement with the periphery of a ong andjournaled dpon the surface of the cheek? plate, and provided with anment with the brake-shoe, and means to move the shaft angular- 1y.

' testimony whereof I affix mysignature in presence of two witnesses.

' i -JUS 'IUS.,HATTEI-1ZER.

Witnesses:

OAR E. PEGK, HUfGo" MOCK.

